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Archived

Avalanche Forecast

Dec 2nd, 2015–Dec 3rd, 2015
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable

Regions: Glacier.

The calm, sunny weather has ended. The stormy weather will usher in change to the mountains.

Weather Forecast

Expect flurries with light to moderate SW winds today, freezing levels remaining in the valley bottom around Rogers Pass. Thursday will bring more snow, but models are in disagreement on amounts: 10 to 25cm could fall. Freezing levels will rise to 1600m on Thursday, with strong SW winds.

Snowpack Summary

5cm of new snow has hidden various surfaces. 20mm surface hoar and surface facetting was prevalent below tree-line. At tree-line and above, 6mm surface hoar was found with sun crusts on steep solar aspects, variable wind effect and slabs in exposed terrain. The low elevation surface hoar and facetting will be a layer to watch with future loading.

Avalanche Summary

No new avalanches observed yesterday.

Confidence

Due to the number of field observations

Avalanche Problems

Wind Slabs

Distribution of winds slabs has been spotty but has been found on southerly aspects. Use caution when transitioning into exposed terrain at tree line and in the alpine.
Be careful with wind loaded pockets, especially near ridge crests and roll-overs.Be cautious as you transition into wind affected terrain.

Aspects: North, North East, East, South East.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3